package com.atguigu.mall.mallproduct.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @author fuc
 * @create 2020-11-21
 */
@EnableConfigurationProperties(CacheProperties.class)
@EnableCaching
@Configuration
public class MyCacheConfig {

  /**
   * 配置文件中的东西没有用上；
   * 1、原来和配置文件绑定的配置类是这样子的 @ConfigurationProperties(prefix="spring.cache")
   *    public class CacheProperties
   *
   * <p>2、要让他生效
   *
   * @return
   */
  @Bean
  RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {
    RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
    config.serializeKeysWith(
        RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
    config.serializeValuesWith(
        RedisSerializationContext.SerializationPair.fromSerializer(
            new GenericJackson2JsonRedisSerializer()));

    // 将配置文件中的所有配置都生效
    CacheProperties.Redis redisProperties = cacheProperties.getRedis();
    // 将配置文件中的所有配置都生效
    if (redisProperties.getTimeToLive() != null) {
      config = config.entryTtl(redisProperties.getTimeToLive());
    }
    if (redisProperties.getKeyPrefix() != null) {
      config = config.prefixKeysWith(redisProperties.getKeyPrefix());
    }
    if (!redisProperties.isCacheNullValues()) {
      config = config.disableCachingNullValues();
    }
    if (!redisProperties.isUseKeyPrefix()) {
      config = config.disableKeyPrefix();
    }
    return config;
  }
}
